Finding the Fourth Proportional to 12,606.45, 18,896.71 and 5,589.77

Step by Step Solution

1. Step 1: Write the proportion equation
   12,606.45 : 18,896.71 = 5,589.77 : x
2. Step 2: Convert to fraction form
   12,606.45/18,896.71 = 5,589.77/x
3. Step 3: Cross multiply
   12,606.45x = 18,896.71 × 5,589.77
4. Step 4: Simplify right side
   12,606.45x = 105,628,259.02
5. Step 5: Solve for x
   x = 105,628,259.02/12,606.45
6. Step 6: Final answer
   x = 8,378.90